Side frame construction for car trucks



Jan. 12 1926.

H. E. -DOERR SIDE FRAME CONSTRUCTION FOR CAR TRUCKS Filed March 27. 1924 TITT Patented Jan. 1 2, 1926.

UNITED STATES PATENT OFFICE.

HARRY E. DOERR, OF ST. LOUIS, MISSOURI, ASSIGNOR T SCULLIN STEEL CO., ST. LOUIS, MISSOURI, A CORPORATIONOF MISSOURI.

SIDE FRAME CONSTRUCTION FOR CAR TRUCKS.

Application filed March 27, 1924. Serial No. 702,190.

' I To all whom it may concern:

Be it known that I, HARRY E. Donna, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Side Frame Constructions for Car Trucks, of which the following is a specification.

This invention. relates to a new and im proved side frame construction for car trucks and more particularly to such a construction formed of pressed steel and including journal boxes permanently secured to the side frames.

- Certain types of side frames have heretofore been formed of pressed steel and the journal boxes have been secured to the side frames by being bolted thereto. This form of construction is not entirely satisfactory since the .bolt connection of the journal box is apt to work loose under servicestrains and there is a failure to properly transmit the load from the bolster to the journals.

- It is an object of the present invention to provide a side frame construction in which the journal boxes arerigidly secured. to the side frame by means of welding.

It is a further object to provide a construction of this character in which the journal boxes are formed of pressed steel,

the meeting edges of the box being preferably welded together.

It is an additional object to provide a construction of this type in which the welded joint in the journal box extends transversely of the box and against a face of the side frame.

It is also an object to provide a construction in which the journal box is additionally secured to the side frame by means of a strap encircling the box and having its ends welded to the'side frame. Other and further objects will appear as the description proceeds.

I have illustrated certain preferred embodiments of the invention in the accompanying drawings, in whichn Figure 1 is a plan view of one-half'of a side frame with the journal box secured thereto;

Figure 2 is a face view of the form of construction shown in Figure 1;

Figure 3 is a fra mentary' view of Figure 1 as seen from t e left;

Figure 4 is a fragmentary view similar to Figure 1, and showing a modified form of construction; and v Figure 5 is a fragmentary view similar to'Figure 2, but showing the form of construction shown in Figure 4.

The form of construction shown, comprises a side frame consisting of two members 11 and 12 which are inwardly faced and welded together along their meeting line, which is upon the vertical longitudinal plane through the side frame. .As

shown in Figure 2, the side frame is pro- 1 vided with the vertical face 13 and the horizontal face 14 adapted to engage the journal box 15. The journal box is welded 1nto position against these faces, welds being indicated at 16 and 17 of Figure 2 and at 18 and 19 of Figure 1. The journal box itself comprises a body portion formed of pressed steel the ed es meeting online 20. The hinge block 21 is welded to the journal box as is the housing 22 adapted to receive the usual dust guard.

The form of construetlon shown. in Figures 4 and 5 is similar to that just described. The strap 23 is, added to the construction,

however, and has its lower end 24 welded to the side frame and its upper end 25 similarly welded to the frame. As clearly shown in Figure 5, this strap encircles the journal box 15 and assistsin strongly retaining it rigidly in place.

In both of these constructions, the journal box is formed of pressed steel and its body comprises a single piece of metal with its ends pressed up and around and welded together on a transverse line to form the top of the box. When the box is welded to the side frame this welded line 20 is against the face of the frame and extends across the welded plane of the frame.

I have shown certain preferred forms of my invention by way of illustration, but it is to be understood that I contemplate such further modifieations'as come within the spirit and scope of the appended claims.

3. Side frame construction comprising a pressed steel side frame, vertical and horizontal journal box seating faces formed on the ends of the side frame, and pressed steel journalboxes having a welded transverse joint, said journal'boxes being welded into position against the side frame faces.

4. Side frame construction comprising a pressed steel side frame consisting of a pair of inwardly facing members welded together along a vertical longitudinal plane, journal box seating faces formed on the ends of the side frame, and pressed steel journal boxes having a welded transverse joint, said journal boxes being welded into position against the side frame faces.

5. Side frame constructioncomprising a pressed steel side frame, pressed steel journal boxes welded to said side frame and straps encircling the journal box and having their opposite ends welded to the side frame.

6. Side frame construction comprisinga pressed steel side frame consisting of apair of members welded together along a vertical longitudinal plane, journal box seating faces formed on the end portions of the side frame, pressed steel journal boxes having a welded transverse joint, said journal boxes being Welded into position against the side frame faces, and straps encircling the journal box and having their opposite ends welded to the side frame.

7. Side frame construction comprising a pressed steel side frame consisting of a pair of members Welded together along a vertical longitudinal plane, journal box seating faces formed on the end portions of the side frame, pressed steel journal boxes having a Welded transverse joint, said journal boxes being Welded into position against the side frame faces the face of the journal box crossed by the transverse joint engaging the side frame, and straps encircling the journal box and having their opposite ends welded to the side frame.

Signed at St. Louis, Mo., this 24th day of March, 1924:.

' HARRY E. DOERR. 

